Jill and I are shocked by the sudden passing of Lindsey Graham. Lindsey and I served together in Congress for over a decade, and worked closely on many issues throughout the years. We traveled the world together as members of the Senate Foreign Relations committee. We disagreed often, and sometimes loudly. Lindsey and I did agree on the profound importance of public service. Like me, he loved the Senate as an institution, even with all its flaws and complexities. To his family, his staff, his constituents in South Carolina, and everyone who loved him: Jill and I are keeping you in our prayers.